1
What is an ion?
A charged atom
What is an isotope?
An atom of the same element with a different number of neutrons
What is a cation?
A positively charged ion
What is an anion?
A negatively charged ion
What are valence electrons?
Electrons on the outermost shell of the electron cloud. Responsible for bonding between atoms.
What is a group on the periodic table?
The group is the column on the periodic table. Elements in the same group will have similar chemical properties
What is a period on the periodic table?
The period is the row of elements. The atomic number increases across the period.
Where are the metals on the periodic table?
The left side
Where are the nonmetals on the periodic table?
The right side
Where are the metalloids on the periodic table?
The zigzag line between the metals and nonmetals
What is the charge of an atom with 15 protons, 15 neutrons, and 17 electrons?
-2
What is the mass number of an atom with 13 protons, 12 neutrons, and 13 electrons?
25 amu
Who created the first periodic table?
Dmitri Mendeleev
How was the first periodic table organized?
By increasing atomic mass
What scientist changed the organization of the periodic table?
Henry Moseley
What are characteristics of metals on the periodic table?
Shiny, malleable, conducts electricity and heat, magnetic
What are characteristics of nonmetals on the periodic table?
Brittle, dull, nonmagnetic, does not conduct electricity or heat
What are chemical properties that elements will have similarities in if they are in the same group?
Boiling point, melting point, reactivity
What determines reactivity?
The number of valence electrons
How many electrons can fit in the outer ring of the electron cloud?
8
Is Silver a metal, nonmetal, or metalloid?
Metal
Is nitrogen a metal, nonmetal, or metalloid?
Nonmetal
Which two elements would be more chemically similar? Nitrogen and Oxygen, Fluorine and Chlorine, or Lithium and Beryllium
Fluorine and Chlorine
How do you find the average atomic mass?
(Mass A x Isotope abundance A) + (Mass B x Isotope Abundance B)
What is the plum pudding model?
JJ Thomson's model of the atom which includes a dense nucleus of the atom with electrons sprinkled along the outside